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Betty Clark — 1940 US Census Record
Linked across censuses1940 United States Federal Census · Olmsted-County, Minnesota
Our Model Tree links this Betty Clark across the 1930 and 1940 US Censuses in Olmsted-County, Minnesota (XGBoost, ~Confirmed) — first a daughter (b.~1929), then head of a 9-person household.
Age 11
b. ~1929
Female
Daughter
Born: Minnesota
Single
1940 Census Record Details
| Census Year | 1940 |
| Location | Olmsted-County, Minnesota |
| Surname | Clark |
| Given Name | Betty Ann |
| Relationship to Head | Daughter |
| Sex | F |
| Color / Race | White |
| Age | 11 |
| Marital Status | Single |
| Birthplace | Minnesota |
| 1935 Residence (City) | Kalmar Township |
| 1935 Residence (County) | Olmsted |
| Additional Details | |
| Highest Grade | 4 |
| 1935 Residence | Same place |
| Birth State | Minnesota |
| Birth Country | United States |
| Birthplace (normalized) | minnesota |
| Township / Ward | Kalmar Township |
| Est. Birth Year | ~1929 |
Household Members
Census records only state relationship to the household head.
Pairwise kinship is derived (~90–95% accurate), not recorded.
Step/blended families and boarders can break it.
9 people recorded at the same address in the 1940 census.
| Name | Relation to head | Relative to Betty | Age | Birth yr |
|---|---|---|---|---|
| Walter Clark | Son | — | 19 | ~1921 |
| William Clark | Son | — | 10 | ~1930 |
| Robert Clark | Son | — | 13 | ~1927 |
| Betty Clark | Daughter | — | 11 | ~1929 |
| Walter Clark | Head | — | 48 | ~1892 |
| Catherine Clark | Spouse | — | 47 | ~1893 |
| Elaine Clark | Daughter | — | 8 | ~1932 |
| Wayne Clark | Son | — | 17 | ~1923 |
| Vernon Clark | Son | — | 15 | ~1925 |
Census Appearances
1930
Olmsted, Minnesota
Daughter, age 1
Olmsted, Minnesota · implied b. ~1929 — 7 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Clark |
| Given Name | Betty A. |
| Relationship to Head | Daughter |
| Sex | F |
| Color / Race | White |
| Age | 1 |
| Marital Status | Single |
| Birthplace | Minnesota |
| Father's Birthplace | Minnesota |
| Mother's Birthplace | Minnesota |
| Birth State | Minnesota |
| Birth Country | United States |
| Birthplace (normalized) | minnesota |
1940
Olmsted-County, Minnesota
Daughter, age 11
Olmsted-County, Minnesota · implied b. ~1929 — 9 household members
| Surname | Clark |
| Given Name | Betty Ann |
| Relationship to Head | Daughter |
| Sex | F |
| Color / Race | White |
| Age | 11 |
| Marital Status | Single |
| Birthplace | Minnesota |
| 1935 Residence (City) | Kalmar Township |
| 1935 Residence (County) | Olmsted |
| Highest Grade | 4 |
| 1935 Residence | Same place |
| Birth State | Minnesota |
| Birth Country | United States |
| Birthplace (normalized) | minnesota |
Model Tree
An inferred pedigree reconstructed from census links — up to 4 generations within the 1900–1950 window. Closer generations are built from household co-residence; deeper ones are bridged by following a relative to their own childhood census. Confidence compounds and weakens with each generation.
Our Model Tree links Betty Clark across 2 US Census years (1930 and 1940) in 2 locations, using XGBoost record linkage.
Show:
This person
Anchor record
Betty Clark
Daughter · 1940 · age 11 · b. ~1929 · Minnesota
★ You are viewing this record
Sibling
William Clark
Sibling · 1940 · age 10
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Elaine Clark
Sibling · 1940 · age 8
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Walter Clark
Sibling · 1940 · age 19
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Vernon Clark
Sibling · 1940 · age 15
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Robert Clark
Sibling · 1940 · age 13
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Wayne Clark
Sibling · 1940 · age 17
Source co-child of head (derived)
● Co-child · derived · ~0.88
Confirmed / household (~0.90+)
Probable / derived (~0.65–0.89)
Candidate (<0.65, unverified)
Original Census Page
1940 US Federal Census — Olmsted-County, Minnesota
Open full size
1940 US Federal Census — Olmsted-County, Minnesota
Page Contents
40 people indexed on this census page (nara:1940:m-t0627-01943-00687)
| Line | Name | Age | Relation | Occupation | Birthplace |
|---|---|---|---|---|---|
| 1 | Phyllis Keckhafer | 11 | Daughter | — | Minnesota |
| 2 | Alice Keckhafer | 5 | Daughter | — | Minnesota |
| 3 | Vern Porter | 29 | Head | Farmer | Minnesota |
| 4 | Vivian Porter | 25 | Wife | — | South Dakota |
| 5 | Farrell Porter | 4 | Son | — | Minnesota |
| 6 | Melvin Whorton | 25 | Head | Truck Driver | Minnesota |
| 7 | Verna Whorton | 25 | Wife | — | Minnesota |
| 8 | Beverly Whorton | 8 | Daughter | — | Minnesota |
| 9 | Lyle Whorton | 6 | Son | — | Minnesota |
| 10 | Ben Hanson | 58 | Head | Farmer | Minnesota |
| 11 | Ellen Hanson | 50 | Wife | — | Minnesota |
| 12 | John Hanson | 27 | Son | — | Minnesota |
| 13 | Alice Hanson | 8 | Granddaughter | — | Minnesota |
| 14 | Adeline Bonville | 22 | Lodger | Teacher | Minnesota |
| 15 | — | None | — | — | — |
| 16 | Mike Lacey | 76 | Head | — | Minnesota |
| 17 | Ada Lacey | 75 | Wife | — | Minnesota |
| 18 | Melvin Lacey | 48 | Son | Farmer | Minnesota |
| 19 | Beatrice Lacey | 36 | Daughter-in-law | — | Minnesota |
| 20 | Betty Lacey | 10 | Granddaughter | — | Minnesota |
| 21 | Myron Hofmeister | 59 | Head | Farmer | Wisconsin |
| 22 | Rudy Hofmeister | 30 | Son | Farmer | Wisconsin |
| 23 | Milba Hofmeister | 22 | Daughter-in-law | — | Minnesota |
| 24 | Lucille Hofmeister | 2 | Granddaughter | — | Minnesota |
| 25 | Virginia Hofmeister | 1 | Granddaughter | — | Minnesota |
| 26 | Walter Clark | 48 | Head | Stone Mason | Minnesota |
| 27 | Catherine Clark | 47 | Wife | — | Minnesota |
| 28 | Walter Clark | 19 | Son | Farm Laborer | Minnesota |
| 29 | Wayne Clark | 17 | Son | — | Minnesota |
| 30 | Vernon Clark | 15 | Son | — | Minnesota |
| 31 | Robert Clark | 13 | Son | — | Minnesota |
| 32 | Betty Ann Clark THIS PERSON | 11 | Daughter | — | Minnesota |
| 33 | William Clark | 10 | Son | — | Minnesota |
| 34 | Elaine Clark | 8 | Daughter | — | Minnesota |
| 35 | Lawrence Thorson | 68 | Head | Farmer | Minnesota |
| 36 | Rose Thorson | 62 | Wife | — | Minnesota |
| 37 | Lester Thorson | 38 | Son | Farm Laborer | Minnesota |
| 38 | Clara Thorson | 34 | Daughter-in-law | — | Minnesota |
| 39 | Leo Thorson | 16 | Grandson | — | Minnesota |
| 40 | Mary Thorson | 14 | Granddaughter | — | Minnesota |
About This Record & Model Tree
This record was independently indexed by YourRoots from the 1940 United States Federal Census (NARA). Our Model Tree links this person across census decades using XGBoost-based record linkage, with per-link confidence scores. Household corroboration strengthens the signal when co-residents appear on the same census pages in multiple years.
Source: National Archives and Records Administration (NARA)